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Re: Amstrad Core
Posted: Sun Jul 30, 2023 1:06 pm
by Higgy
breiztiger wrote: ↑Sun Jul 30, 2023 9:40 am
why implement ALT-F11 to reset as we already have CRTL-SHIFT-ECHAP like a real cpc ? and for hard reset CRTL-ALT-ALTGR ...
I didn't know this, I ended up wiring in a push button off the edge connector on my 6128's
Re: Amstrad Core
Posted: Mon Jul 31, 2023 4:12 pm
by nano
Hello breiztiger,
I see, thank you. This correction seems to be ahead of the MiST baseline at the moment and looks like a workaround to me (T80 hack). I am not sure how it should be handled within the Amstrad cores...
breiztiger wrote: ↑Sun Jul 30, 2023 9:40 am
why implement ALT-F11 to reset as we already have CRTL-SHIFT-ECHAP like a real cpc ? and for hard reset CRTL-ALT-ALTGR ...
You are right. This is not completely justified. But I have considered it for the sake of completeness and it doesn't really hurt.
breiztiger wrote: ↑Sun Jul 30, 2023 9:40 am
as i am a noob in fpga i have just report mod on mist to mister and compil
Me too
BTW if you know someone who could be interested in porting the Symbiface II RTC/IDE support from the MiST to the MiSTer that would be nice!
Cheers!
Re: Amstrad Core
Posted: Thu Aug 10, 2023 4:47 pm
by breiztiger
Re: Amstrad Core
Posted: Sat Aug 12, 2023 7:55 am
by breiztiger
the latest build from 08/11 lack this correction for revolog
https://www.atari-forum.com/viewtopic.p ... 58#p446858
Re: Amstrad Core
Posted: Tue Aug 29, 2023 12:49 pm
by breiztiger
Re: Amstrad Core
Posted: Sun Sep 03, 2023 8:35 am
by breiztiger
hi
https://www.atari-forum.com/viewtopic.p ... 74#p450374
with sync_filter(0) core compilation mike's demo and madness demo work great on crt
ps : isn't possible to have COPY key to left-alt and crtl-end to CTRL-RIGHT like on the real CPC ?
Re: Amstrad Core
Posted: Sat Sep 09, 2023 10:33 am
by breiztiger
hi
fdc seem to be two time too fast as a normal 6128
the fdc is clock to 4mhz i think not 8mhz like in u765.sv
//for accurate head stepping rate, set CYCLES to cycles/ms
//8MHz = 4000 (default)
Re: Amstrad Core
Posted: Wed Oct 04, 2023 1:51 pm
by johns123
Am I doing something wrong with the amstrad core? I can get TAP files to load fine but I select a .DSK file I get er (after typing CAT)
Drive A: disk missing
Retry, Ignore or Cancel
Re: Amstrad Core
Posted: Wed Oct 04, 2023 2:42 pm
by breiztiger
with all your dsk files ?
Re: Amstrad Core
Posted: Wed Oct 04, 2023 3:01 pm
by johns123
I think I fixed it. Had to move all of the files into the main amstrad core folder for them to be recognised
Re: Amstrad Core
Posted: Sat Nov 18, 2023 9:51 am
by breiztiger
Re: Amstrad Core
Posted: Sat Nov 18, 2023 11:21 am
by breiztiger
This "demo" doesn't work (just a simple raster) with actual core
https://www.cpc-power.com/index.php?pag ... &num=11826
Only work with sync_filter 0. Is it possible to create a menu dip to enable / disable this ?
Re: Amstrad Core
Posted: Sun Dec 10, 2023 8:12 pm
by breiztiger
Hello
As symbos 4 bêta seem to be out can somebody port symbface ii from MiST core to MiSTer core ?
Thanks very much in advance !!!
Re: Amstrad Core
Posted: Mon Dec 11, 2023 7:42 pm
by johns123
Has something changed in the latest version of the core? I just getting a black screen now when trying to boot into it the OSD comes up but no core
Fixed. Was a dodgy system rom file all sorted
Re: Amstrad Core
Posted: Thu Jan 04, 2024 10:37 pm
by lroby74
Hello everybody,
i've noticed that 3 files about Z80 implementation (T80 named) here:
https://github.com/mist-devel/T80/tree/master
are updated (only 9 months old) so i would like to update them here:
https://github.com/MiSTer-devel/Amstrad ... er/rtl/T80
but i don't have permissions for do that, which is correct procedure for can do that or something similar that?
Furthermore, one of files of T80 itself on Spectrum page has been updated on last past days:
https://github.com/MiSTer-devel/ZX-Spec ... 80/T80.vhd
Would be possible for a common person like me to help you developers in someway?
I've compiled Amstrad RBF core using these 3 updated files and it starts correctly
Thank you
Re: Amstrad Core
Posted: Fri Jan 05, 2024 7:09 am
by breiztiger
Or port the z80 from nuked md megadrive …
Re: Amstrad Core
Posted: Fri Jan 05, 2024 7:48 am
by lroby74
breiztiger wrote: ↑Fri Jan 05, 2024 7:09 am
Or port the z80 from nuked md megadrive …
Oh, i didn't remember that, it would be even better!
So Z80 from NukeMD could be imported and used for all Z80 main CPU based (like MSX or Spectrum) or secondary CPU (like C128), so like on other consoles and arcade cores?
This would improve a good number of them i think, or not?
Re: Amstrad Core
Posted: Fri Jan 05, 2024 12:26 pm
by azesmbog
What about the REVOLUTION demo ?
This demo exists in three variants, just one, rumoured PC emulator can run all three variants.
But I only checked on RVM - one variant, the simplest one, runs.
On MiSTer core - none of the variants works.
About Z80 from NukeMD - it may be a good core, but it will definitely not fit all cores without exception.
But if someone builds ZX Spectrum core with it - I will be glad to test it.
Re: Amstrad Core
Posted: Fri Jan 05, 2024 10:05 pm
by breiztiger
Re: Amstrad Core
Posted: Fri Jan 05, 2024 10:52 pm
by azesmbog
Judging by the fact that it doesn't work in RVM either, that's it. But I can post the 3 variants I have somewhere.
Re: Amstrad Core
Posted: Sat Jan 06, 2024 8:05 am
by breiztiger
revolog work either protected (run"revolog) or deprotected (run"revologd)
CRTC 0 Only !!!
Re: Amstrad Core
Posted: Sat Jan 06, 2024 9:06 am
by azesmbog
Only CRTC 0 !!!
Where do I put it or set it? I'm not a real welder and Amstrad enthusiast, I'm more specialised in Spectrum )
Alas, I failed to start again even with your file and your firmware.
I attach an archive with the files I have.
Only revolog0-sin_proteccion works on RVM
upd: CRTC 0 - I found where to toggle it,
but I still can't get anything to run.
Re: Amstrad Core
Posted: Sat Jan 06, 2024 10:13 am
by breiztiger
with the dsk and core i provided it work
Re: Amstrad Core
Posted: Sat Jan 06, 2024 10:56 am
by azesmbog
breiztiger wrote: ↑Sat Jan 06, 2024 10:13 am
with the dsk and core i provided it work
Do all three variants in my archive work?
Re: Amstrad Core
Posted: Sat Jan 06, 2024 1:49 pm
by breiztiger
your dsk are the same as mine (protected and unprotectedon the same dsk)
all your three version dsk work with the core i provided
Re: Amstrad Core
Posted: Mon Feb 05, 2024 11:40 am
by johns123
Question for those in the know? so I want to look at say multigames on CDT tapes (say multigames on 1 side of a tape so forth) is there a way to reset the core keep the same tape position try the next game on the tape?
Re: Amstrad Core
Posted: Mon Feb 05, 2024 6:18 pm
by kathleen
johns123 wrote: ↑Mon Feb 05, 2024 11:40 am
Question for those in the know? so I want to look at say multigames on CDT tapes (say multigames on 1 side of a tape so forth) is there a way to reset the core keep the same tape position try the next game on the tape?
In a first glance, I'd say no this is not possible with CDT tapes.
Looking at what is written on the GitHub, this confirms my thoughts.
CDT tape files
CDT supported in very basic form for retro feeling and for some very specific apps. There is no way to rewind or fast forward the file. USER LED will lit if there is a tape in the memory and still have data to play and blink while playback.
Control keys:
Alt+F1 - mute/unmute the tape sound
Alt+F2 - unload the tape (turn off the LED)
CDT playback respects the tape motor ON/OFF state.
Re: Amstrad Core
Posted: Mon Feb 05, 2024 8:20 pm
by johns123
Ah OK I tried that Alt+F2 method earlier so don't bother doing the multi attempt OK
Re: Amstrad Core
Posted: Tue Feb 06, 2024 6:29 pm
by kathleen
johns123 wrote: ↑Mon Feb 05, 2024 8:20 pm
Ah OK I tried that Alt+F2 method earlier so don't bother doing the multi attempt OK
There is another option, Amstrad core supports tape input through ADC. So you can play wav on your tape player connected to MiSTer by audio cable like you would do on real hardware (in case you have the ADC of course).
Re: Amstrad Core
Posted: Wed Feb 07, 2024 8:12 am
by Higgy
If your going to try tape, you must try the tape demo 'Breaking Baud'. It basically streams the demo from tape!!!
Very impressive to watch on real hardware, but still impressive to see on MiSTer when you understand what is happening.
https://www.cpcwiki.eu/index.php/Breaking_Baud